首页 | 本学科首页   官方微博 | 高级检索  
     


Effect of topically applied charged particles on healing of colonic anastomoses
Authors:Guler Mehmet  Kologlu Murat  Kama Nuri Aydin  Renda Nurten  Gozalan Ugur  Yuksek Yunus Nadi  Daglar Gul
Affiliation:Fourth Department of Surgery, Ankara Numune Hospital, Uzmanlar Tip Grubu, 3 Cadde, 41 Sokak, No. 3/1, Bah?elievler, 06500 Ankara, Turkey.
Abstract:HYPOTHESIS: Various forms of electrical stimulation can improve wound healing in different tissues, but their application to gastrointestinal tract healing has not been investigated. We assumed that positively charged diethylaminoethyl cross-linked dextran bead (diethylaminoethyl Sephadex [DEAE-S]) particles would have a beneficial effect on the healing of colonic anastomoses. DESIGN: Experimental animal study. SETTING: Animal research laboratory of a university hospital. ANIMALS: Forty female Wistar albino rats. INTERVENTIONS: Right colonic transection and anastomosis was performed in 5 animal groups. The control group received no treatment; the placebo group, methylcellulose gel; and the DEAE-S group, DEAE-S in methyl cellulose gel applied topically around the anastomoses. The fecal peritonitis (FP) group underwent cecal ligation and perforation simultaneously with the anastomosis to cause FP; the FP + DEAE-S group also received DEAE-S applied around the anastomoses. MAIN OUTCOME MEASURES: After the completion of postoperative day 4, all rats were killed. Anastomotic bursting pressures and hydroxyproline concentrations in perianastomotic tissue were measured and compared. RESULTS: Mean bursting pressures were 115.1 mm Hg in the control group, 113.6 mm Hg in the placebo group, 159.4 mm Hg in the DEAE-S group, 62.8 mm Hg in the FP group, and 121.1 mm Hg in the FP + DEAE-S group (P =.001, 1-way analysis of variance [ANOVA]). The differences between the control vs DEAE-S groups, placebo vs DEAE-S groups, and FP vs FP + DEAE-S groups were significant (P<.05, t test). Mean hydroxyproline concentrations were 5.2 microg/mg in the control group, 4.9 microg/mg in the placebo group, 5.6 microg/mg in the DEAE-S group, 4.5 microg/mg in the FP group, and 5.4 microg/mg in the FP + DEAE-S group (P =.09, 1-way ANOVA). The difference between the FP and FP + DEAE-S groups was significant (P =.04, t test). CONCLUSIONS: A positively charged particle, DEAE-S, improves healing of colonic anastomoses in healthy rats and in rats with FP. This inexpensive, nontoxic material is easily applied and deserves further evaluation in gastrointestinal tract healing.
Keywords:
本文献已被 PubMed 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号